NASA's Kennedy Space Center managers paid tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other NASA colleagues, during the agency's Day of Remembrance observance on Jan. 29. Kennedy Center Director and former astronaut Bob Cabana, Kennedy Deputy Center Director Janet Petro and United Space Alliance Vice President of Launch and Recovery Systems and Florida Site Executive Mark Nappi took part in a wreath-laying ceremony at the Kennedy Space Center Visitor Complex's Space Mirror Memorial. NASA's Day of Remembrance honors members of the NASA family who lost their lives while furthering the cause of exploration and discovery.